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Science L7 Work and Energy
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In this image both the truck and the motorbike are travelling at the same speed. Which will have the greater kinetic energy and why?
The truck as heavier. Mass affects Kinetic Energy
At which point would the roller-coaster car have the greatest gravitational potential energy?
A as the highest point
In this image, where would potential energy be for the rollercoaster car?
A and C and D
The formula for Kinetic energy is as follows: KE = 1/2 mass x velocity squared
True
Kinetic Energy is the energy of motion or energy in use. True or False
True
Potential energy stored within the chemical bonds of an object is called _______________.
Chemical energy
When the bow is released, where will the energy be transferred to? From the bow string to the arrow OR from the bow string into the bow
From the bow string to the arrow
What energy is being depicted in this image?
Elastic potential energy
Potential energy due to compression or expansion of an elastic object is called _____________________.
Elastic potential energy
What energy is depicted in this image?
Potential energy
The greater the mass of the object, the lower the gravitational potential energy. True or false
False
When is gravitational potential energy greater? At a higher or lower height
Higher height
Is this the correct formula for potential energy? PE = mgv
No , it is PE=mgh
What is potential energy? Is it energy waiting to be used OR energy busy being used
Waiting to be used
Name a type of potential energy.
Gravitational, elastic and chemical energies
What is energy? Is it the ability to cause change OR to bring stability
Change
The product of distance and the force in the direction an object moves is called work. True OR false
True
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